E. Costanzo, F. Furnari, y V. Tomaselli, «A phytosociological survey of the main plant community types of alpine and sub-alpine belt in the Sibillini Mountains (Central Apennines, Italy)», Lazaroa, vol. 30, pp. 219–250, feb. 2010, Accedido: jul. 25, 2026. Disponible en: https://revistas.ucm.es/index.php/LAZA/article/view/LAZA0909110219A